Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system
Patent
1988-10-21
1989-11-14
Tokar, Michael J.
Electricity: measuring and testing
Particle precession resonance
Using a nuclear resonance spectrometer system
324318, G01R 3320
Patent
active
048810320
ABSTRACT:
A method for NMR spectroscopy metabolite imaging utilizes the steps of: applying to a desired portion of a sample a pulsed phase-encoding linear magnetic gradient signal in at least one of the three orthogonal dimensions of a Cartesian coordinate set, prior to acquisition of free-induction-decay NMR response signals from the sample portion; substantially eliminating from at least the sample portion eddy current fields induced responsive to the phase-encoding gradient pulses; maximizing the signal-to-noise ratio of the NMR response signals; and displaying the data resulting from Fourier transformation of the received response data. A high-field NMR imaging system is provided with self-shielded gradient coils, to subsantially remove eddy-current effects, and at least one of maximized-SNR antenna, of quadrature-driven volume RF coil and/or surface RF coil types are utilized for both transmission of the excitation RF pulses and reception of the RF response signals. The acquired FID data is filtered and a Fourier transform reconstruction, of dimension d' equal to one greater than the numder d of spatial dimensions to be displayed, is performed.
REFERENCES:
patent: 4319910 (1982-03-01), Meyer
patent: 4506223 (1985-03-01), Bottomley
patent: 4567440 (1986-01-01), Haselgrove
patent: 4629988 (1986-12-01), Bottomley
patent: 4683431 (1987-07-01), Pattany
patent: 4689560 (1987-08-01), Nayler
patent: 4699148 (1987-10-01), Gyngell
patent: 4728893 (1988-03-01), Feinberg
patent: 4737716 (1988-04-01), Roemer
patent: 4740753 (1988-04-01), Glover
P. A. Bottomley et al., "Human in Vivo Phosphate Metabolite Imaging with .sup.31 P NMR*", Magnetic Resonance in Medicine 7, 319-336 (1988).
Bottomley Paul A.
Edelstein William A.
Mueller Otward M.
Roemer Peter B.
Davis Jr. James C.
General Electric Company
Krauss Geoffrey H.
Snyder Marvin
Tokar Michael J.
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